AN ASTRONOMICAL WATCH

Graham has produced the Touribllon Orrey, an planetarium watch to celebrate the 300 years of the Orrery with a moving earth, moon, and mars display.

A CELEBRATION OF THE 300 YEARS OF THE ORRERY

The Geo.Graham Tourbillon Orrery is a tribute to the 300th anniversary of the invention of the Orrery, the mechanical solar system model created by George Graham in 1713.

1713-2013

GEO.GRAHAM TOURBILLON ORRERY

It’s actually more than a wristwatch, it is also an orrey, a device that shows the relative positions and motions of bodies in the solar system using balls moved by clockwork.

This magnificent timepiece shows the orbital patterns of the Earth, Moon and Mars rotating around the Sun, represented by an 18k fiery pink gold lattice design. Beneath the sun, slightly visible, is the tourbillion on the center of the dial. The moon, represented by a steel rhodium ball, rotates around the earth as the earth, represented as a clear blue sapphire ball, rotates around the sun. Mars is represented by a round red ruby, circles the sun on the outer edge of the dial.

The movement that powers this timepiece was made exclusively for Graham by Christophe Claret. Its accuracy is exceptional: The earth revolves at exactly 365 ¼ days so there is no adjustment for the leap year. Corrections to the orbital patterns are minimal and are planned and indicated on the back of the watch. For the moon it’s every seven years, for Mars it’s every 25 years and for the earth (wait for it) every 1,152 years. The moon and mars have self correcting indicators. The orrery should be functional for 300 years before needing to be taken to a watchmaker for a minor adjustment to the perpetual calendar.

FUNCTIONS:Manual Tourbillon Orrery, mechanical solar system model with 100 years calendar (two additional graduations of 100 years - 300 years in total). Year counter on the case back with planet correction indicators. (Moon: 7 years, Earth: 1156 years, Mars: 25 years)